php jsonインタフェースdemo

<?php
class Student
{
    public $no;
    public $username;
    public $password;

}
$student=new Student();
$student->no=11;
$student->username='xxx';
$student->password='hehe';
echo json_encode($student);

$result=array(
    'no'=>$student->no,
    'password'=>$student->password,
    'username'=>$student->username
);
echo json_encode($result);

$arr=array();
array_push($arr,$student);
$student=new Student();
$student->no=12;
$student->username='fdsadf';
$student->password='  ';
array_push($arr,$student);
$student=new Student();
$student->no=13;
$student->username='xx';
$student->password='    ';
array_push($arr,$student);


echo json_encode($arr);


?>

<?php

date_default_timezone_set('PRC');
$str=date("Y-m-d",time());
echo $str;
echo '<br/>';

$result='ws'.$str;
echo $result;
echo '<br/>';

$result=md5($result);
echo $result;
echo '<br/>';

$authaccesstoken=sha1('ws'.$result);
echo $authaccesstoken;
echo '<br/>';

?>